cmake HAVE_STRUNVIS examples

alibaba/AliSQL cmd-line-utils/libedit/CMakeLists.txt :83 

CHECK_FUNCTION_EXISTS(strunvis HAVE_STRUNVIS)

alibaba/AliSQLBackup cmd-line-utils/libedit/CMakeLists.txt :83 

CHECK_FUNCTION_EXISTS(strunvis HAVE_STRUNVIS)